40049757 has 24 divisors (see below), whose sum is σ = 63329760. Its totient is φ = 24187680.

The previous prime is 40049749. The next prime is 40049759. The reversal of 40049757 is 75794004.

It is a happy number.

40049757 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40049757 - 2³ = 40049749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40049759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38794 + ... + 39812.

It is an arithmetic number, because the mean of its divisors is an integer number (2638740).

Almost surely, 2^40049757 is an apocalyptic number.

It is an amenable number.

40049757 is a deficient number, since it is larger than the sum of its proper divisors (23280003).

40049757 is a wasteful number, since it uses less digits than its factorization.

40049757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1433 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 40049757 is about 6328.4877340483. The cubic root of 40049757 is about 342.1369360328.

The spelling of 40049757 in words is "forty million, forty-nine thousand, seven hundred fifty-seven".